Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edf02333528b0a21d7a4654057d2fafdba0fb6c7618886fd208921c18a2411d1' 
  AND token = 'WfHQsVXi17E9exkthr0FyQvcJnfIOHDEtcGzkCrDCL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}